It is of great significance to prepare electrochemical glucose sensors with high selectivity and stability via effective and rapid methods. In this work, the self-support electrode with copper and nickel-based oxide is prepared by chemical-etching reaction which occurred under the property of electrochemical potential difference. In this processing, nickel foam is etched selectively by Cu2+ ions and they not only act as self-supporting electrode substrate, but also as nickel ions precursor of NiO. Moreover, the reaction can be completely satisfied on 30 min at room temperature. As a self-supporting electrode nonenzymic glucose electrochemical sensor, the electrode exhibited a wide linear range (0.04–3.00mM), low detection limit (0.02mM) with high sensitivity of 1096μA⋅mM−1⋅cm−2 and good selectivity, repeatability and stability. Furthermore, the application of the prepared sensor provides an avenue for the application of the transition metal materials in the field of electrochemical sensing.

中文翻译：

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电化学蚀刻法制备检测葡萄糖的铜镍基氧化物自支撑电极

通过有效、快速的方法制备具有高选择性和稳定性的电化学葡萄糖传感器具有重要意义。在这项工作中，铜和镍基氧化物的自支撑电极是通过在电化学电位差特性下发生的化学蚀刻反应制备的。在此处理中，泡沫镍被 Cu 选择性蚀刻2+离子，它们不仅作为自支撑电极基材，而且作为NiO的镍离子前体。此外，反应在室温下30分钟即可完全满足。作为一种自支撑电极非酶葡萄糖电化学传感器，该电极表现出较宽的线性范围（0.04-3.00mM），低检测限（0.02mM) 具有 1096 的高灵敏度μ一种⋅毫米-1⋅厘米-2具有良好的选择性、重复性和稳定性。此外，所制备的传感器的应用为过渡金属材料在电化学传感领域的应用提供了途径。